\f\fStress and level of exercise are well known factors that affect a person's lifespan. In an interesting longitudinal experiment, a team of tincture took a random sample from a population of people with low stress and low exercise level jobs and a second independent random sample from a population of people with high stress and high exercise level jobs. The lifespans were measured as age (in years} at death. The standard deviation of lifespan in the \"low level\" population was known to be It} veers, and the standard deviation of lifespan in the \"high level" population was known to be 9 years. The following are the lifespans of the two samples: \"low level\" 1372,7113 . 33-7.5312 .55.7,3o.3 , 74.n,33.s,37.4,31.3,74.5.313 33.7.1573 , 533,543,325 ,31.4,74.a,33.e.32-s , 73.3,3s.2,52.e 74.2 , 73.5 , 34.3 , 53.3 , 72.1 , 35.2 , 71.7 , 33.5 , 72.5 .333 , 55.7 , 33.1 77o. 72.3.1357 and 7o.3 \"high 13.731" 73.2 , 572,511.15 , 32.3 , 33.11 , 53.3 , 73-2 , 71-3 ,33.7 , 711.2 , 323,151.11 32.7 , 52.3 , 72.7 , 33-3 , 34.3 , 7o.2 , 53.2 , 37.1 .343 , 71.3 , 52.3 , 51.7 33.4 .3117 , 53.3 . 77.3 .333 .333 , 75.3 . 73.3 , 73.1 .3112 and 35.3 At the llll level of signicance, was the team of doctors able to oonclude that there is an}r difference in mean lifespan of people between the two populations of job categories